RE: Nitro models pusher Bobcat?
I maidened mine yesterday, setup is as follows
Thunder Tiger 46 pro with standard muffler
Have used both 10/7 and 11/7 APC props
All up weight is just short of 7.0 lbs
The model flys nicely with this setup, I had a TT Pro 61 but when I did the trial balance I needed another 10 oz of lead in the nose, (the 46 needs 4 oz of nose weight, the 61 need close to 15 oz) when I looked at the motor specs and available props I chose to go with the 46. The 61 weighs 10 oz more plus the extra nose weight is an extra 1 1/4 lbs which I thought would outway the extra 0.3 bhp that the 61 has over the 46, also the 46 is quoted at 16000 rpm against the 61's 15000.
Other mods I have done are a single servo in the stab for the elevator as you have done, I have reinforced the landing gear blocks as shown previously in this forum, I have also reinforced the mounting plates in the booms, the back ones with some square hardwood epoxied in and on the fronts I zapped in a sub former about 1/2 inch back from the plate so I could pour in 30 minute epoxy up to a level flush with the sides of the booms, if you do this put some silicone grease on the nylon bolt and thread it through untill it bottoms out on the balsa top sheeting, that way the epoy will be threaded and you will be able to get the bolt out. That ugly green bit can be very carefully rubbed off with 1200 wet paper, let the paper do the work and dont use a lot of presure and keep the water fresh, when its off use some buffing compound, the buffing compond will also remove the overspray that seems to be on the model, I plan on retracts and also getting the ports modified on the 46 and fitting a custom header and pipe to get some more RPM, it is certainly a nice model to fly, the wing loading is 22.5 oz sq/ft and landings are quick, I would'nt like to go the 61 as I think the overall package would suffer (Higher Wing Loading), but thats my thoughts.
By the way we fly at about 800 ft above sea level so we get pretty good performance out of our motors, I dont use nitro and the model climbs out vertical for at least 100 ft before it starts to drop its nose